This is required for 2.6.36-stable and later.
==
Commit 4b53433468c87794b523e4683fbd4e8e8aca1f63 removes
a cancel of charge at case: 
memory charge-> success.
mem+swap charge-> failure.

This leaks usage of memory. Fix it.

This patch is required for stable tree since 2.6.36.

CC: [email protected]
Signed-off-by: KAMEZAWA Hiroyuki <[email protected]>
---
 mm/memcontrol.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-2.6.38-rc2/mm/memcontrol.c
===================================================================
--- linux-2.6.38-rc2.orig/mm/memcontrol.c
+++ linux-2.6.38-rc2/mm/memcontrol.c
@@ -1832,6 +1832,7 @@ static int __mem_cgroup_do_charge(struct
                if (likely(!ret))
                        return CHARGE_OK;
 
+               res_counter_uncharge(&mem->res, csize);
                mem_over_limit = mem_cgroup_from_res_counter(fail_res, memsw);
                flags |= MEM_CGROUP_RECLAIM_NOSWAP;
        } else

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